Update peps/pep-0780.rst

Co-authored-by: Michał Górny <mgorny@gentoo.org>

Author: zklaus

peps/pep-0780.rst

@@ -294,7 +294,7 @@ can be used::
 
 Note that in the absence of the features described in this PEP, early adopting
 projects have had to resort to using the fork for *all* builds of a potentially
-free threading Python interpreter; typical dependencies than look like::
+free threading Python interpreter; typical dependencies then looked like::
 
     pyyaml; python_version<"3.13"
     pyyaml-ft; python_version>="3.13"